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Interaction of a quantum-dot cavity system with acoustic phonons : Stronger light-matter coupling can reduce the visibility of strong coupling effects

Title data

Glässl, Martin ; Sörgel, L. ; Vagov, Alexei ; Croitoru, Mikhail D. ; Kuhn, Tilmann ; Axt, Vollrath M.:
Interaction of a quantum-dot cavity system with acoustic phonons : Stronger light-matter coupling can reduce the visibility of strong coupling effects.
In: Physical Review B. Vol. 86 (2012) Issue 3 . - Art.Nr. 035319, 5 S..
ISSN 0163-1829
DOI: https://doi.org/10.1103/PhysRevB.86.035319

Project information

Project financing: Alexander von Humboldt-Stiftung
Studienstiftung des deutschen Volkes
Marie Curie Intra-European Fellowship Action (Grant No.PIEF-GA-2009-235486-ScQSR)

Abstract in another language

We present a numerically complete study of the combined dynamics of a quantum dot exciton coupled to a single quantized cavity mode and a continuum of acoustic phonons. We demonstrate that acoustic phonons have a pronounced impact on effects characteristic of the strong light-matter coupling regime, such as vacuum Rabi oscillations and collapse and revival scenarios. This impact is considerable already at zero temperature, where initially no phonons are present. Counterintuitively it is found that an increase of the light-matter coupling does not necessarily enhance the visibility of strong-coupling effects. In fact, for typical experimental situations, a stronger light-matter coupling will considerably reduce the visibility.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: collapse and revival; cavity; strong light-matter coupling; Jaynes-Cummings model; quantum dot; path-integrals; nonlinear optics; ultrafast dynamics; pure dephasing; phonons; decoherence; excitons; non-Markovian dynamics; memory effects; phonon-induced memory; multi-phonon processes; numerically complete real-time path integrals; quantum dissipative dynamics; phonon induced relaxation; cavity QED
Institutions of the University: Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics
Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Chair Theoretical Physics III > Chair Theoretical Physics III - Univ.-Prof. Dr. Martin Axt
Faculties
Faculties > Faculty of Mathematics, Physics und Computer Science
Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Chair Theoretical Physics III
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 530 Physics
Date Deposited: 03 Nov 2017 06:36
Last Modified: 03 Nov 2017 06:36
URI: https://eref.uni-bayreuth.de/id/eprint/40245